Nut-lock.



R. T. McCLURE NUT LOCK.

APPLICATION FILED NOV. 21. 1914.

Patented Ma 2 SHEET aM Lw/vl/bOL LEAQQ'YQD R T. McCLURE.

NUT LOCK.

APPLICATION FILED NOV. 21, 1914.

13,149,272 I Patented 18, 1915.

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ROBERT T. MGGLURE, OF GRANDVIEW, WEST VIRGINIA.

NUT-LOCK.

Specification of Letters Patent.

Patented May 18, 1915.

Application filed November 21, 1914. Serial No. 873,348.

To all whom it may concern Be it known that I, ROBERT T. MGCLURE, acitizen of the United States, residing at Grandview, in the county ofRaleigh and State of est Virginia, have invented certain new and usefulImprovements in Nut- Locks, of which the following is a specification.

This invention relates to improvements in nut locks for preventing theretrograde movement of nuts upon bolts, and has for one of its objectsto provide a simply constructed device which may be applied to nuts andbolts of various sizes and forms and to nuts and bolts employed forvarious purposes, and has for another one of its objects to simplify andimprove the construction and increase the efficiency and utility of adevice of this character.

Another object of the invention is to provide a simply constructeddevice which may be applied to a nut without alteration in the nut.

WVith these and other objects in view, the invention consists in certainnovel features of construction as hereinafter shown and described andthen specifically pointed out in the claims.

The improved device may be applied to nuts and bolts employed foruniting various shapes and sizes of bodies, and it is not desired,therefore, to limit the invention in any manner in this respect, but forthe purpose of illustration, the improved device is shown applied to oneof the nuts of one of the clamp bolts of an ordinary railway rail joint,and likewise shown applied to a bolt or nut employed for connecting twobodies other than the clamp members of a railway rail joint.

In the drawings, illustrative of the preferred manner of using theinvention, Figure 1 is a side elevation of a railway rail jointincluding one of the clamp bolts with the improved locking memberapplied; Fig. 2 is a section on the line 22 of Fig. 1; Figs. 3 and 4 areperspective views of the nut locking device with the parts separated;Fig. 5 is a view of the blank from which the body portion of the lockingdevice is constructed; Fig. 6 is a view similar to Fig. 1, showing theimproved device applied to the nut of a bolt which is employed foruniting two members other than the clamp bars of a railway rail joint.Fig. 7 is a section on the line 77 of Fig. 6. Fig. 8 is a view similarto Fig. 3, illustrating the construction of the locking members shown inFigs. 6 and 7 Fig. 9 is a plan view of the lock ing members as shown inFigs. 6, 7 and 8. Fig. 10 is a detached perspective view of the lockingkey employed in the structure shown in Figs. 6 and 7.

Corresponding and like parts are referred to in the followingdescription and indi cated in all the views of the accompanying drawingsby the same reference characters.

The improved device comprises a plate or body member, represented as awhole at 10, and preferably formed from sheet metal, and initially inthe form shown in Fig. 5 with an aperture ll'to engage over the bolt,represented conventionally at 12, and between the nut, representedconventionally at 13, and the parts which the bolt and nut are designedto clamp together.

In Figs. 1 and 2, the device is shown applied to a railway rail joint,the rail being indicated conventionally at 14, and the clamp or fishplates at 1516 of usual form, and in Figs. 6 and 7 the bolt and its nutare shown employed for clamping two bodies together, the bodies beingrepresented conventionally at 17-18.

When employed upon a railway rail joint, the body 10 encircles the bolt12 and bears between the nut 13 and one of the fish plates, forinstance, the fish plate 15, and when employed for holding the bodies1718 together, the plate 10 bears upon one of the members, for instance,the member 17 and between the nut and the member which is held. l/V-henemployed upon a railway rail joint, the lower portion of the plate 10 isbent outwardly, as represented at 19, and bears upon the outwardlydirected portion of the plate 15, the member 10 being thus held fromrotation upon the bolt.

When employed upon the structure illustrated in Figs. 6 and 7 aprotuberance 20 will be formed on the body 10 to enter a cavity in themember 17 to hold the member 10 from rotation. Any suitable means may beemployed for preventing the body 10 from rotating upon the bolt, theholding means depending on the structure upon which the device isemployed. The member 10 is preferably dish-shaped, as indicated at 28,to assist in holding the nut.

By reference to Fig. 5, it will be noted that the member 10 is rovidedwith a cleft, indicated at 21, and communicating through one end of theplate and another cleft 22 extending in parallel relation to one end ofthe plate and terminating at the cleft 21. By this means, a tongue 23 isproduced which may be bent into the shape shown in Figs. 2, 3, 7 and 8to form a resilient holdingdevice, the object to be hereinafter eX-plained.

In constructing the holding device, the portion of the plate 10 abovethe cleft 21 is bent'at right angles to the body of the plate along thedotted line 24 and the bent over portion again bent at right angles tothe first bent portion along the dotted line 25, thus forming a channel,represented at 26, as illustrated in Figs. 3 and 8, with the tongue 23at the inner edge of the channel.

A key, represented at 27, is disposed in the channel 26 against one sideof the nut 13 after the latter has been turned home by a wrench or othersuitable instrument. The key 27 is provided with a transverse recess 28into which the free end of the tongue 23 engages when the key is forcedto its lowest position, to prevent the key from being accidentallyreleased, and at the same time the key may be readily removed when asuflicient force is employed, to release the nut.

The channel 26 may be arranged to extend at right angles to theupperedge of the member 10, as shown in Figs. 1, 2, 3 and 5,

or slightly inclined, as indicated in Figs. 6 and 7, the key 27 beinglikewise inclined or Copies of this patent may be obtained for slightlywedge shaped on one side to correspond to the inclination of the outerside gaged by said tongue, said key being adapted to engage a nut uponsaid bolt.

2. A nut lock comprising a body apertured to receive a bolt and with akey receiving channel opening toward the bolt receiving aperture, onewall of said channel having a cleft to produce a resilient tongueadapted to be projected into the channel, and a key engaging in saidchannel and engaged by said tongue, said key being adapt ed to engage anut upon said bolt.

In testimony whereof I afiix my signature in presence of two witnesses.

ROBERT T. McCLURE. [1,. s]

WVitnesses:

'J. C. F ARLEY,

E. W. FLnsH'MA five cents each, by ad iressing the Commissioner ofPatents. Washington, I). 0.

